\( \begin{array}{l}\text { Fill in the missing } \\ \text { number. } \\ -\times 10= \\ 500,000\end{array} \)

To find the missing number, you need to divide 500,000 by -10. When you do the math, you find that the missing number is -50,000. So, -50,000 times -10 gives you 500,000, as the product of two negative numbers is positive! This problem highlights a neat property of multiplication: the rules of signs! Remember, multiplying two negatives makes a positive, which is a fun little quirk in math that helps us solve problems efficiently. Keep this in mind for similar problems, particularly when working with negative numbers!